Wall construction



G. 0. SCHULZ.

WALL CONSTRUCTION.

APPLICATION FILED IvIAII. I0l |920.

Jlgys.

Gusav dschwz. @y @hump G. 0. SCHULZ.

WALL CONSTRUCTION; APPLICATION FILIED MAR. I0. 1920.

1,383,766, Patented July 5,1921.

2 SHEETS-SHEET 2- y WMWWWS.

` erators, but in walls for receptacles or con-v UNITED airfares,v

Param oFrIcE. f

GUSTAVO. SCHULZ, or IREVERE, MAssacrrusi;Tins.4

Win11.A CONSTRUCTION.

T 0 all w from t may concern Be it known that I, GUSTAV O. SCHULZ, a citizen of the United States, and a resident of Revere, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Wall Construction, of which the following description, in connection with the accompanying drawingsis a specification, like characters f on the drawings representing like parts. Y

This invention relates to wall construction for various 'purposes and more particularly to wall construction for containers which, in the disclosed embodiment of' the invention, are typified by a vessel adapted to receive a refrigerant and to support articles to be subjected to refrigerant action.

In order that the principle lof the invention may be readily understood, I have 'dis-- closed in the accompanying drawings several adaptations only of my invention, and

. to which the same is in no wise limited.

In said drawings,-' Figures 1, 2, 3, 5 and 6.are vertlcal transverse sections of refrigerators to which I have shown my invention as applied, Figs.

1 and 2 representing the refrigerator in an incomplete condition;v and Figs. 4 and 7 are front elevations of the respective refrigerators.

I shall proceed to describe that embodiment of my invention herein appearing as a refrigerator, but it is to be understood that the wall construction to which nay-invention relates may be employed not only in refrigl tainers of general, application. lMy invention, however, is peculiarly applicablenin connection with containers adapted to `re-.

ceive ice or other refrigerating material and adapted for cold storage purposes.

Referring morel particularly to the rembodiment of my Vinventionrherein shown,fIV`

have in Fig. 1 representeda refrigerating vessel which is composed`mainly,'or if 'de-Y sired wholly, of "a hermetically sealed envelop 1 having within the same a hollow core comprising the members 2, and spaced supports 3, there being a vacuum space 4, said vacuum being created preferably through the valve 5, and by any desirable means such as a vacuum pump.

In Figs. 1 and 2, to support articles to be subjected to refrigerant action, and a pan 7 to support a refrigerant 8, such as ice. In order t0 Sup- Specicaton yof Letters Patent.

I havel shown shelves 6 -sealed lenvelop 1. Consequently the'pipe 1() which passes through' the pipe 11 can be removed or replaced without interfering with the vacuum in the space 4.

rIlheY hermetically" sealed envelop closing the coreA 2 is then'placed preferably in a `frame 12, Fig. 3, which maybe'of/"any desired form or character. Attached l'by hinges 13,Fig. 4, and thus becoming a part of the frame 12, are hermetically sealed envelops 1% and 1b forming,V the doors forthe; refrigerator. The envelops 1a, and 1b in'- close the cores 2a and 2b, supports gaand 3b,

j Patented July 5,1921. Applicationmea March-1o, 1920. serialno. 364,811. 1 A

so Y

vacuum spaces 4av and 4", and hav'e'the valves f 5.a and 5b respectively.l The doors 1lEL and 1b and the frame .12 are providedvwithsnap locks 14-and the frame 12 with casters l5,

' 585V In Fig. 5,I have shown` three different Figs.V 3V and 4.

hermetically sealed envelops l, 1d andV 1, whichtake the place of the envelop 1, Figs. 1,'2 and 3. Each of the envelops inclosesa hollow core having a vacuum and similar to the part 2, Fig. 1, and has a valve"5,f5d,

5@ respectively.

The hermetically sealed envelop 1f,'Fig. 6,

incloses a hollow 'core2f supporting blocks Y 3f and vacuum space 4f andhas'a'valve' 5f. The envelop 1f including the core '2f is` made so asto flare as at 17,'inl order to receive the',

doorV which comprises the hermetically sealed envelop 1g', hollow 'core"`2g, support- 'ing' blocks 3g, vacuum space 4g, yand valve'v 5g. vIn order'to support the refrigerant'S,

I provide a pan 7n, which is'supp'o'rted'by an. iron or other suitable frame 15. The' frame 15 valso supports the shelves 6a for articles to be subjected to refrigerant action. Attached to the pan ar is a pipe 10a to conduct drip from the refrigerant 8.a. .The doorlg, Fig. 6, is attached preferably to the frame 12a by hinges 13a and snap lock 14,

Fig. 7.

n Winl be seen that there is a distinct and important feature in my novel construction, Y

of the hermetically sealed envelops which enables me to construct a wall of any desired form either curved or fiat, without using a heavy material for the construction of the envelop itself, such as a heavy iron casting or other material necessary to withstand atmospheric pressure. The material that I preferably use in the practice of my invention is about 26 gage galvanized sheet metal, this being found sufficient by me to form an air barrier and still make a light and inexpensive construction. But in order to utilize such a light material, since it is subjected to more than fourteen pounds pressure per square inch, and still maintain a uniform surface throughout, I provide a continuo'usbrace to the envelop such as that indicated at 2,.Fig. l. I utilize'supporting blocks or strips which like the brace are preferably made of wood and are the means of supporting the brace by separating it from its adjacent brace; that is to say, I separate the two adjacent braces 2 by the supporting blocks 3, Fig. l. As each brace acts to overcome the atmospheric pressure directed against it and as this pressureis in an opposite direction to the pressure directedv against the respective adjacent brace, the braces support each other, the intermediate supporting blocks or strips co-acting therewith to this end. By using supporting blocks merely and solely to support the envelop, satisfactory results cannot be obtained, since the position of the envelop between the supports is not braced; consequently the atmospheric pressure acting on the envelop will cause this portion to concave or bend, thus giving the envelop an irregular surface. The results are also commercially unacceptable if a. continuous brace be used to support the envelop, but no supporting blocks are provided to support the brace against atmospheric pressure, because, as such, the brace is not suitable in the construction of walls for containers of comparatively larY e size, especially such as refrigerators. onsequently it is evident that the provision of both the supporting blocks or strips and the braces is a great improvement in the construction of vacuum insulated walls.

I-Iaving thus described several illustrative embodiments of my invention, I desire it to be understood that although specific terms are employed, they are used in a generic andy descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims;

1. A wall for a receptacle comprising in combination, a hermetically sealed envelop, a hollow core enveloped thereby and inclosing a vacuum, Vsaid core bracing said envelop against atmospheric pressure, and means coperating with said wall to support a refrigerant and conduct drip from said refrigerant. v

2. A wall for a receptacle comprising in combination, a hermetically sealed envelop, a hollow core enveloped thereby and inclosing a vacuum, said core bracing said envelop against atmospheric pressure, and means cooperating with said Wall to support a refrigerant and articles to beV subjected to refrigerant action.

`3. A wall for a receptacle comprising in combination, a plurality of hermetically sealed envelops, and a corresponding plurality of hollow cores enveloped thereby, each core bracing its respective envelop against atmospheric pressure.

A. A wall for a receptacle comprising in combination, a plurality of hermetically sealed envelops, a corresponding plurality of hollow cores enveloped thereby, each core bracing vits respective envelop against atmospheric pressure, and means cooperating with 4said wall to'support a refrigerant and conduct drip from said refrigerant.

- 5l A wall for a receptacle comprising in combination, a hermetically sealed envelop,

a hollow core enveloped thereby and inclosing a vacuum, said core having spaced' members bracing said envelop, and 'means inclosed between said lspaced members to support said members against vatmospheric pressure by bracing said members each against each.

6. A wall for ka receptacle comprising in combination, a hermetically sealed envelop of sheet metal, a hollow core enveloped bysaid sheet metal,.means for creating and maintaining a vacuum within said hollow core, said core being constructed and arranged to brace said envelop against atmospheric pressure, and ymeans coperating with,

said wall to support a refrigerant.

In testimony whereof I have signed my naine to this specification-- -GUSTAV 0. SCHULZ. 

